Modify or delete an effect
You modify or delete an effect by using the Appearance
panel.
Select
the object or group (or target the layer in the Layers panel) that
uses the effect.
Do one of the following:
To modify the effect,
click its blue underlined name in the Appearance panel. In the effect’s
dialog box, make the desired alterations, and then click OK.
To delete the effect, select the effect listing in the Appearance
panel, and click the Delete button.